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java.lang.NullPointerException: Unexpected error	at mrriegel.storagenetwork.helper.NBTHelper.setInteger(NBTHelper.java:137)	at mrriegel.storagenetwork.items.ItemRemote.func_180614_a(ItemRemote.java:82)	at net.minecraft.item.ItemStack.func_179546_a(ItemStack.java:135)	at net.minecraft.client.multiplayer.PlayerControllerMP.func_178890_a(PlayerControllerMP.java:410)	at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1491)	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2036)	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1024)	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:349)	at net.minecraft.client.main.Main.main(SourceFile:124)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)